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ccl21  (R&D Systems)


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    Structured Review

    R&D Systems ccl21
    ( a-d ) Tracing assay for VEGFR3Cre ERT2 using Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice. ( a ) Merged image of Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice after treatment with tamoxifen stained for anti-RFP (red, b ) and LEC marker <t>anti-CCL21</t> (green, c ) demonstrating colocalization of TdTomato (red) and LECs (green) without significant TdTomato ( Cre reporter) expression outside of LECs. ( d ) Merged image of Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice after treatment with tamoxifen stained for anti-RFP (red) and anti-VEGFR3 (LEC marker) also demonstrating colocalization of TdTomato (red) and LECs (green) without significant TdTomato expression outside of LECs. ( e ) Lung lymphatic endothelial cells (LECs) were isolated by flow cytometry for qPCR to assess knock-down efficiency of F2r (PAR1) in PAR1 iLECKO mice (n = 6) compared to PAR1 fl/fl mice (n = 3) with Gapd (GAPDH) as the reference housekeeping gene. Unpaired 2-tailed t- test; **, p = 0.0093. ( f ) BAL cell counts in room air PAR1 fl/fl (n = 4) and PAR1 iLEC KO (n = 4) mice compared to PAR1 fl/fl mice (n = 8) and PAR1 iLEC KO mice (n = 18) after 84 hours of hyperoxia exposure. One-way ANOVA; *, p = 0.0124; **, p = 0.0022; * p = 0.0332 from left to right. ( g, h ) Representative PCLS images demonstrating accumulation of CD45R + leukocytes (blue) in the peri-interstitial alveolar spaces adjacent to lymphatic collectors ( Prox1-EGFP , green) in PAR1 iLEC KO mice after hyperoxia-induced lung injury. BAL count and imaging data representative of at least 2 independent experiments. All error bars represent SEM. All scale bars = 200 µm.
    Ccl21, supplied by R&D Systems, used in various techniques. Bioz Stars score: 93/100, based on 90 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/ccl21/Mouse+CCL21%2F6Ckine+Antibody/pmc12343296-253-28-34
    Average 93 stars, based on 90 article reviews
    ccl21 - by Bioz Stars, 2026-11
    93/100 stars

    Images

    1) Product Images from "The thrombin receptor PAR1 orchestrates changes in lymphatic endothelial cell junction morphology to augment lymphatic drainage during lung injury"

    Article Title: The thrombin receptor PAR1 orchestrates changes in lymphatic endothelial cell junction morphology to augment lymphatic drainage during lung injury

    Journal: Nature Cardiovascular Research

    doi: 10.1038/s44161-025-00681-7

    ( a-d ) Tracing assay for VEGFR3Cre ERT2 using Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice. ( a ) Merged image of Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice after treatment with tamoxifen stained for anti-RFP (red, b ) and LEC marker anti-CCL21 (green, c ) demonstrating colocalization of TdTomato (red) and LECs (green) without significant TdTomato ( Cre reporter) expression outside of LECs. ( d ) Merged image of Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice after treatment with tamoxifen stained for anti-RFP (red) and anti-VEGFR3 (LEC marker) also demonstrating colocalization of TdTomato (red) and LECs (green) without significant TdTomato expression outside of LECs. ( e ) Lung lymphatic endothelial cells (LECs) were isolated by flow cytometry for qPCR to assess knock-down efficiency of F2r (PAR1) in PAR1 iLECKO mice (n = 6) compared to PAR1 fl/fl mice (n = 3) with Gapd (GAPDH) as the reference housekeeping gene. Unpaired 2-tailed t- test; **, p = 0.0093. ( f ) BAL cell counts in room air PAR1 fl/fl (n = 4) and PAR1 iLEC KO (n = 4) mice compared to PAR1 fl/fl mice (n = 8) and PAR1 iLEC KO mice (n = 18) after 84 hours of hyperoxia exposure. One-way ANOVA; *, p = 0.0124; **, p = 0.0022; * p = 0.0332 from left to right. ( g, h ) Representative PCLS images demonstrating accumulation of CD45R + leukocytes (blue) in the peri-interstitial alveolar spaces adjacent to lymphatic collectors ( Prox1-EGFP , green) in PAR1 iLEC KO mice after hyperoxia-induced lung injury. BAL count and imaging data representative of at least 2 independent experiments. All error bars represent SEM. All scale bars = 200 µm.
    Figure Legend Snippet: ( a-d ) Tracing assay for VEGFR3Cre ERT2 using Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice. ( a ) Merged image of Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice after treatment with tamoxifen stained for anti-RFP (red, b ) and LEC marker anti-CCL21 (green, c ) demonstrating colocalization of TdTomato (red) and LECs (green) without significant TdTomato ( Cre reporter) expression outside of LECs. ( d ) Merged image of Lox-stop-lox ; TdTomato ; VEGFR3Cre ERT2 mice after treatment with tamoxifen stained for anti-RFP (red) and anti-VEGFR3 (LEC marker) also demonstrating colocalization of TdTomato (red) and LECs (green) without significant TdTomato expression outside of LECs. ( e ) Lung lymphatic endothelial cells (LECs) were isolated by flow cytometry for qPCR to assess knock-down efficiency of F2r (PAR1) in PAR1 iLECKO mice (n = 6) compared to PAR1 fl/fl mice (n = 3) with Gapd (GAPDH) as the reference housekeeping gene. Unpaired 2-tailed t- test; **, p = 0.0093. ( f ) BAL cell counts in room air PAR1 fl/fl (n = 4) and PAR1 iLEC KO (n = 4) mice compared to PAR1 fl/fl mice (n = 8) and PAR1 iLEC KO mice (n = 18) after 84 hours of hyperoxia exposure. One-way ANOVA; *, p = 0.0124; **, p = 0.0022; * p = 0.0332 from left to right. ( g, h ) Representative PCLS images demonstrating accumulation of CD45R + leukocytes (blue) in the peri-interstitial alveolar spaces adjacent to lymphatic collectors ( Prox1-EGFP , green) in PAR1 iLEC KO mice after hyperoxia-induced lung injury. BAL count and imaging data representative of at least 2 independent experiments. All error bars represent SEM. All scale bars = 200 µm.

    Techniques Used: Staining, Marker, Expressing, Isolation, Flow Cytometry, Knockdown, Imaging

    Related Articles

    Blocking Assay:

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells.
    Article Snippet: In some experiments, DCs were added in the top well together with 20 nM murine plasminogen (Molecular Innovations) or with 8 nM murine plasmin (Molecular Innovations) chemotactic stimuli consisting of 100 ng/ml human CCL21 (PeproTech), 100 ng/ml human CCL21-ΔC (generated as described above), 100 ng/ml murine CXCL12 (PeproTech), 100 ng/ml murine CXCL12 and 20 nM murine plasminogen (Molecular Innovations), 100 ng/ml murine CXCL12, and 8 nM murine plasmin (Molecular Innovations). .. In some cases, 1 μg/ml of CCL21 blocking antibody (polyclonal, AF457; R&D Systems) was added to the lower wells. .. After 2 h, transmigrated DCs were stained with Armenian hamster anti-mouse CD11c PE/Cy7 (clone N418) and rat anti-mouse MHC-II BV421 (clone M5/114.15.2; both BioLegend), quantified by flow cytometry on a Cytoflex S apparatus (Beckman Coulter) using CytExpert software, and analyzed with FlowJo software 10.4.0 (Treestar).

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells.
    Article Snippet: .. Extracellular CCL21 staining in LN sections Inguinal LNs of adult (6–10 wk) WT and uPAmut mice were embedded in OCT. Unfixed, freshly cut 10-μm sections were blocked with 5% donkey serum (D9663; Sigma-Aldrich) in PBS and stained immediately with goat anti-mouse CCL21 (AF457; R&D Systems, 13 μg/ml), rabbit anti-mouse LYVE-1 (polyclonal, AngioBio), and rat anti-mouse B220/CD45R (BD Pharmingen) in blocking solution for 1 h at RT, as previously described (Ulvmar et al., 2014). .. After a 10 min PBS wash, sections were incubated with secondary antibodies donkey anti-goat IgG-AF549, donkey anti-rabbit IgG-AF647, donkey anti-rat IgG-AF488, and Hoechst (all from Invitrogen) in blocking solution for 1 h at RT.

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells
    Article Snippet: .. Inguinal LNs of adult (6–10 wk) WT and uPA mut mice were embedded in OCT. Unfixed, freshly cut 10-μm sections were blocked with 5% donkey serum (D9663; Sigma-Aldrich) in PBS and stained immediately with goat anti-mouse CCL21 (AF457; R&D Systems, 13 μg/ml), rabbit anti-mouse LYVE-1 (polyclonal, AngioBio), and rat anti-mouse B220/CD45R (BD Pharmingen) in blocking solution for 1 h at RT, as previously described ( ). .. After a 10 min PBS wash, sections were incubated with secondary antibodies donkey anti-goat IgG-AF549, donkey anti-rabbit IgG-AF647, donkey anti-rat IgG-AF488, and Hoechst (all from Invitrogen) in blocking solution for 1 h at RT.

    96 Well Plates:

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells
    Article Snippet: .. Clear flat-bottom Immuno non-sterile 96-well plates (Thermo Fisher Scientific) were coated with capture antibody (polyclonal goat anti-mouse CCL21 AF457; R&D Systems), diluted at 2 μg/ml in PBS, and incubated at 4°C overnight. ..

    Incubation:

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells
    Article Snippet: .. Clear flat-bottom Immuno non-sterile 96-well plates (Thermo Fisher Scientific) were coated with capture antibody (polyclonal goat anti-mouse CCL21 AF457; R&D Systems), diluted at 2 μg/ml in PBS, and incubated at 4°C overnight. ..

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells.
    Article Snippet: .. Clear flat-bottom Immuno non-sterile 96-well plates (Thermo Fisher Scientific) were coated with capture antibody (polyclonal goat anti-mouse CCL21 AF457; R&D Systems), diluted at 2 μg/ml in PBS, and incubated at 4°C overnight. ..

    other:

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells
    Article Snippet: In some experiments, DCs were added in the top well together with 20 nM murine plasminogen (Molecular Innovations) or with 8 nM murine plasmin (Molecular Innovations) chemotactic stimuli consisting of 100 ng/ml human CCL21 (PeproTech), 100 ng/ml human CCL21-ΔC (generated as described above), 100 ng/ml murine CXCL12 (PeproTech), 100 ng/ml murine CXCL12 and 20 nM murine plasminogen (Molecular Innovations), 100 ng/ml murine CXCL12, and 8 nM murine plasmin (Molecular Innovations).

    Control:


    Western Blot:


    Virus:


    Staining:

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells.
    Article Snippet: .. Extracellular CCL21 staining in LN sections Inguinal LNs of adult (6–10 wk) WT and uPAmut mice were embedded in OCT. Unfixed, freshly cut 10-μm sections were blocked with 5% donkey serum (D9663; Sigma-Aldrich) in PBS and stained immediately with goat anti-mouse CCL21 (AF457; R&D Systems, 13 μg/ml), rabbit anti-mouse LYVE-1 (polyclonal, AngioBio), and rat anti-mouse B220/CD45R (BD Pharmingen) in blocking solution for 1 h at RT, as previously described (Ulvmar et al., 2014). .. After a 10 min PBS wash, sections were incubated with secondary antibodies donkey anti-goat IgG-AF549, donkey anti-rabbit IgG-AF647, donkey anti-rat IgG-AF488, and Hoechst (all from Invitrogen) in blocking solution for 1 h at RT.

    Article Title: uPA-mediated remodeling of CCL21 gradients regulates lymphatic migration of dendritic cells
    Article Snippet: .. Inguinal LNs of adult (6–10 wk) WT and uPA mut mice were embedded in OCT. Unfixed, freshly cut 10-μm sections were blocked with 5% donkey serum (D9663; Sigma-Aldrich) in PBS and stained immediately with goat anti-mouse CCL21 (AF457; R&D Systems, 13 μg/ml), rabbit anti-mouse LYVE-1 (polyclonal, AngioBio), and rat anti-mouse B220/CD45R (BD Pharmingen) in blocking solution for 1 h at RT, as previously described ( ). .. After a 10 min PBS wash, sections were incubated with secondary antibodies donkey anti-goat IgG-AF549, donkey anti-rabbit IgG-AF647, donkey anti-rat IgG-AF488, and Hoechst (all from Invitrogen) in blocking solution for 1 h at RT.



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    Image Search Results


    A Experimental design. Primary human CD8⁺ T cells were co-engineered with a lentiviral construct encoding the NR4A2-responsive synthetic promoter SP73 driving mCherry and constitutive EGFP to identify transduced cells, together with a retroviral NY-ESO-1–specific TCR. Engineered T cells were expanded and co-cultured with NY-ESO-1–expressing SK-MEL23 melanoma cells. B Quantification of mCherry⁺ T cells over time during co-culture. SP73-engineered T cells show progressive reporter induction, whereas control cells transduced with the control promoter SP01 (lacking NR4A2 binding sites) remain at baseline levels. Data represent mean ± SEM of n = 3 independent donors. C Representative IncuCyte® live-cell images showing SP73-driven mCherry fluorescence during co-culture with SK-MEL23 melanoma cells; SP01 controls show negligible signal. D Expression of NR4A2 and activation/dysfunction-associated markers in engineered T cells during co-culture. Data represent mean ± SEM of n = 3 independent biological donors. Statistical analysis was performed using one-way ANOVA with Tukey’s post hoc test. P values: CD39, P < 0.0001 for R0vsR2 and R0vsR4, P = 0.0048 for R2vsR4. NR4A2, P = 0.0375 for R0vsR2. LAG-3, P = 0.0194 for R0vsR2, P = 0.0097 for R0vsR4. TIM-3, P = 0.008 for R0vsR2, P = 0.0433 for R2vsR4. TIGIT, P = 0.0082 for R0vsR4, P = 0.0433 for R2vsR4. E Functional assessment of engineered T cells prior co-culture (R0) and following persistent antigen exposure (R4). Left: Quantification of IL-2⁺, TNFα⁺, CD107a⁺, and IFNγ⁺ cells following Leukocyte Activation Cocktail (LAC) stimulation. Right: Representative flow cytometry histograms illustrating shifts in cytokine-producing populations. Data represent mean ± SEM of n = 3 independent biological donors. Statistical analysis was performed using a two-tailed paired t test comparing R0 vs R4. P values: IL-2, P = 0.0074; TNFα, P = 0.0068; CD107a, P = 0.0401; IFNγ, P = 0.0147. Source data for this figure is available in the  file. Created in BioRender.

    Journal: Nature Communications

    Article Title: A modular synthetic promoter toolkit for programmable gene control in activated and chronically stimulated T cells

    doi: 10.1038/s41467-026-77730-7

    Figure Lengend Snippet: A Experimental design. Primary human CD8⁺ T cells were co-engineered with a lentiviral construct encoding the NR4A2-responsive synthetic promoter SP73 driving mCherry and constitutive EGFP to identify transduced cells, together with a retroviral NY-ESO-1–specific TCR. Engineered T cells were expanded and co-cultured with NY-ESO-1–expressing SK-MEL23 melanoma cells. B Quantification of mCherry⁺ T cells over time during co-culture. SP73-engineered T cells show progressive reporter induction, whereas control cells transduced with the control promoter SP01 (lacking NR4A2 binding sites) remain at baseline levels. Data represent mean ± SEM of n = 3 independent donors. C Representative IncuCyte® live-cell images showing SP73-driven mCherry fluorescence during co-culture with SK-MEL23 melanoma cells; SP01 controls show negligible signal. D Expression of NR4A2 and activation/dysfunction-associated markers in engineered T cells during co-culture. Data represent mean ± SEM of n = 3 independent biological donors. Statistical analysis was performed using one-way ANOVA with Tukey’s post hoc test. P values: CD39, P < 0.0001 for R0vsR2 and R0vsR4, P = 0.0048 for R2vsR4. NR4A2, P = 0.0375 for R0vsR2. LAG-3, P = 0.0194 for R0vsR2, P = 0.0097 for R0vsR4. TIM-3, P = 0.008 for R0vsR2, P = 0.0433 for R2vsR4. TIGIT, P = 0.0082 for R0vsR4, P = 0.0433 for R2vsR4. E Functional assessment of engineered T cells prior co-culture (R0) and following persistent antigen exposure (R4). Left: Quantification of IL-2⁺, TNFα⁺, CD107a⁺, and IFNγ⁺ cells following Leukocyte Activation Cocktail (LAC) stimulation. Right: Representative flow cytometry histograms illustrating shifts in cytokine-producing populations. Data represent mean ± SEM of n = 3 independent biological donors. Statistical analysis was performed using a two-tailed paired t test comparing R0 vs R4. P values: IL-2, P = 0.0074; TNFα, P = 0.0068; CD107a, P = 0.0401; IFNγ, P = 0.0147. Source data for this figure is available in the file. Created in BioRender.

    Article Snippet: The sequence of IL12p70 was obtained from pLN540 (FuGW-G8p-IL12-P2A-CCL21-1Pe) (Addgene #105201 ).

    Techniques: Construct, Retroviral, Cell Culture, Expressing, Co-culture Assay, Control, Transduction, Binding Assay, Fluorescence, Activation Assay, Analysis, Functional Assay, Flow Cytometry, Two Tailed Test